sysdeps/s390/v1-sigjmp.c

   1 /* Copyright (C) 1992-2013 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.
  17
  18    Copied from setjmp/sigjmp.c for extending jmp_buf.  */
  19
  20 #include <bits/wordsize.h>
  21 #include <shlib-compat.h>
  22
  23 #if !defined NOT_IN_libc && defined SHARED
  24 # if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_19)
  25 #  include <stddef.h>
  26 #  include <v1-setjmp.h>
  27 #  include <signal.h>
  28
  29 /* This function is called by the `sigsetjmp' macro
  30    before doing a `__setjmp' on ENV[0].__jmpbuf.
  31    Always return zero.  */
  32
  33 int
  34 __v1__sigjmp_save (__v1__sigjmp_buf env, int savemask)
  35 {
  36   env[0].__mask_was_saved = (savemask &&
  37                              __sigprocmask (SIG_BLOCK, (sigset_t *) NULL,
  38                                             &env[0].__saved_mask) == 0);
  39
  40   return 0;
  41 }
  42
  43 # endif /* SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_19) */
  44 #endif /* !NOT_IN_libc && SHARED  */